External devices that can read a Personal identification number (PIN) or other information may also be connected to a keyboard (usually called "card readers with PIN pad").
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There is also a Wiegand interface commonly used to transmit the data collected by a Wiegand sensor in a card reader.
Below the HVAC button section is a panel that opens to give access to the DVD changer which also includes a CompactFlash card reader.
The Japanese Rockman games for GBA (known as Mega Man outside of Japan) used Card Reader e+ cards to customize their game with the e-Reader +.
Transaction Verification must utilise either Out-of-band technology (the use of two separate channels) or an independent signing device, e.g. a programmable card-reader, capable of having transactional information re-keyed into it in order to create a code cryptographically linked to the underlying transaction detail.